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Introduction
MTU profile reset troubleshooting - DNX - NCS57XX
This document is mostly focus on troubleshooting of MTU on interface & how to verify if it is correctly programmed
Steps to follow
Check the Bundle configuration
RP/0/RP0/CPU0:NCS...
Subjected new feature will be enabled with below CLI from XR release 24.4.2. This will help to alert customer if Network processor (NP) is high utilising.
Below configuration command is required to monitor NP Utilisation/frame-buffers (RFD) and gen...
Symptom : When different types of RTs (2-byte AS, 4-byte AS) is configured on RPL & VRF route target, it will be treated as 'additive' extended communities.
Conditions: RTs (2-byte AS, 4-byte AS)
Ex:
route-policy TEST-IPv4
if destination in (0.0.0...
Behaviour Changed of Dynamic Slow peer.
Slow peer detection and processing is not intended for peers that are permanently slow. Peers that are permanently slow should be moved into their own update group by configuring same route-policy for all the ...
Introduction
ASR9K XR and ASR903 (IOSXE) ISIS behaviour
Problem
ASR9K preferring ISIS L2 for prefix (Lo0) of peer ASR903 (IOS-XE) due to which RAN instance interface is getting preferred
Solution
IOS XR & IOSXE behaviour
IOSXE & IOSXE behaviour...
In scaled BNG profile, this RIB stale entry would come in corner scenerio which will prevent some subscriber to come up, so better is switch/upgrade to latest release of 7.11.21/7.9.21 for ASR9K. This release have some design enhancements which will ...
We can use telemetry for system checks & proactively monitoring. Please refer below link for ASR9K & DNX telemetry sensors
https://community.cisco.com/t5/tkb/workflowpage/tkb-id/4441-docs-service-providers/article-id/5940
For verifying the packets drops or critical alarms , below CLI should help
show controllers fia diagshell 0 "diag counters g" loc <LC>show controllers npu stats traps-all instance all location <LC>
show controllers npu stats traps-all instance all ...
Below some additional triage for Fabric related issue
https://www.cisco.com/c/en/us/support/docs/routers/asr-9000-series-aggregation-services-routers/220131-troubleshoot-punt-fabric-data-path-failu.html
